Air-heating device for cars



(No Model.) 3 Sheets- Sheet l.

. L. P. CONVERSE.

AIE HEATING DEVICE EOE GARS. 1 No. 383,171. Patented May 22, 1888.

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(No Model.) 3 Sheets-Sheet 2.

L. P. CONVERSE.

AIR HEATING DEVICE 1-"0'11 GARS.

110. 888,171. Patented May 22, 1888.

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N PETERS Pnmuhogmpher washmgwn D c (No Model.) 3 Sheets-Sheet 3.

L. P. CONVERSE.

AIR HEATING DEVICE PQR CARS.

No. 383,171. Patented May 22, 1888.y

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L 44395. /xN' N. PLTERS, Phmo-Limgraphnr, washington. D. C.

JNiTn rares LYMAN I?. CONVERSE, OF CHICAGO, ILLINOIS.

AIRHHEATING DEVlCE FOR CARS.

SPECIFICATION forming part of Letters Patent No. 383,171, dated May 22, 1888.

Application filed JulyY 2.2, 13s?. Serial No. 244.9652. (No model.)

T0 all whom it may concern:

Be it known that I, LYMAN l?. CoNvnRsn, a citizen of the United States, residing at Chi cago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Air-Heating Devices for Cars, the., of which the following is a specification.

The object of my improvement is to provide an effective device of very simple construction, which, without taking up much space, if, in fact, any space that would be otherwise available, will serve to heat to a comfortable temperature a large inclosure with the consumption of a comparatively small quantity of fuel.

lVhile myimproved device may be used with all its attendant advantages in various connections, as for heating rooms, it is particularly useful and especially designed for heating streetcars, and I describe and illustrate it in such connection in the accompanying drawings, in whicl1-- Figure l is a transverse section of a street car provided with my improved heating device; Fig. 2, a cross-section of the heating device, taken on the line 2 of Fig. 1, viewed in the direction of the arrow and enlarged; Fig. 3, a plan View of the lower casting of the heater, showing a modified construction; Fig. 4, a bottom View of the intermediate casting within the heater; Fig. 5, a plan view showing the preferred construction of the lower casting of the heater, and having a portion broken away t0 disclose the central opening in the car-door, and one of the openings coinciding with the corner-openings in the lower casting; and Fig. 6, a cross-section, through the bottom casting, ofthe preferred. construction.

A is a fire-pot, preferably rectangular, open at its upper end and containing a grate, B, supported near its bottom. The firepot is se. cured at its upper edge to the n nder side of the car-door q around an opening, o', of the same shape as the re-pot provided inthe said floor, preferably near the longitudinal center of the car below a seat, C. A jacket, D, surrounds the irespot, being secured, like the latter, to the under side of the carhoor, as shown, whereby a chamber, p, is provided between the jacket and tire-pot entirely around the latter. At each of the four corners of the chamber p an opening, p', (shown in Fig. 5 of the drawings and corresponding with the corner-openings shown in Fig. 3 in the bottom casting of the heater, hereinafter described,) is provided.

E is the heater, shaped like the opening/r in the car-floor and comprising a casting, F, FiO. 3, having a flange, o, about the edge of its upper side, an opening, a, in each corner, and a central circular opening, m. The casting Fis also raised toward its center around the open` ing m and provided with ahorizontaliiange, Z, around its edge. It is imposed upon the upper side of the carlloor (suitable material y, such as asbestus, that is non-conductive of heat, being interposed around the opening r) in a manner to cause the openings a in the corners of the ilangc Z to coincide with the openings p', hereinbefore described as being provided over the chamber p in the car-floor.

G is a casting shaped like the casting F, eX- ceptthat it has no lateral iiange Z, but sloping from an opening, m', provided in its center, which opening is of greater diameter than the opening m in the casting F below it, which is provided with a collar, or. Upon the under side of the casting G are three series of ribs, the first comprising strips 7c extending on each side of the opening m near the edge, but separated at the corners; the second, bent strips k blocking the openings between the strips 7c between the latter and the opening m and separated to have spaces near the center of the strips k, and the third, straight strips k2 on four sides adjacent to the opening m', separated at the corners and blocking the openings between the strips 7s. A flange, o, extends downward from the edge ot' the casting G to coincide with and rest upon the flange o on the casting below it, and openings t', in any desired number, are provided between the iiauges o and o.

4 The top casting, II, shaped substantiallylike the casting G, but sloping more from the central opening, mi, provided with a collar, zr', is imposed upon the casting G at ils edge on a vertical flange, o2, bent, as shown, toward its lower edge to form a seat. The opening m2 coincides with the opening m below it, and a smoke fine, I, extends from the opening m in the casting F, to which it is secured around the collar x through the openings m m2 and roof of the car. A hot-air iiue, K, extends IOO from the casting H about the' collar x' at the openingm2 therein to any desired height within the car and surrounds the smokefiiue.

Fuel is fed to the fire-pot through a chute, L, extending from the floor at a convenient point, and provided with a removable cover, h.

The operation of my device is as follows: Cold air enters the heater E by way of the chamber p through the openings u, and also through the lateral openings t. As the heater is directly over the fire-pot, itbecomes rapidly and intensely heated, thereby also heating the cold air in its passage through the chamber p. Vithin the heater, owing to the impeding effect of the strips 7c, 7c', and k2, the air, before escaping through the flue K, must, to reach the latter, make a circuitous route, whereby it is retained within the heater a suficient length of time to raise it to a very high temperature, in which condition it eventually discharges into the car or inclosure from the hot-air iiue K.

It will thus be seen that a compact device of simple construction is afforded,-Which heats not only by radiation, like other devices for the same purpose, but that the same amount of fuel is employed to heat air which is discharged directly into the inclosure, thereby greatly augmenting the heating capacity ofthe device.

If desired, the strips lr, k', and k2 may be provided on the upper surface of the casting F, instead of on the lower surface of the casting G, as shown, and this construction is, in fact, the preferable one, since, as the strips then form part of the lowest casting, which is in direct contact with the fire, they become hotter than when provided on the casting G, and I manufacture my device in accordance with this preferred construction.

What I claim as new, and desire to secure by Letters Patent- 1. In an air-heating device, the combination of a fire pot, A, a jacket, I), surrounding the iiredpot and affording a chamber, p, aheater, E, supported directly over the fire-pot, comprising a casting, F, )rovided with an opening, m, a casting, G, provided with an opening, m', and surmounting the casting F, ribs between the'two castings about the openings therein, 5

affording a circuitous chamber having communication with the surrounding atmosphere, and a casting, H, surmounting the casting G, and provided with an opening, mi, a smokeflue, I, extending through the openings m, m', and m2, and a hot-air flue, K. extending from the casting H around the smoke-flue and opening into the inclosure to be heated, substantially as described.

2. The combination, with a car having an opening, 1, in its Hoor, of a heating device comprising a Lire-pot, A, and a jacket, D, surrounding the fire-pot underneath the car, and affording a chamber, p, a chute, L, having its inlet in the door of the car and leading from the car-floor into the lire-pot, a heater, E, supported on the upper side of the cariloor directly over the lire-pot, and comprising a casting, F, provided with an opening, m, and with openings a, leading into the chamber p, a casting, G, provided with an opening, m', and surmounting the casting F, ribs between the two castings about the openings therein, affording a circuitous chamber having communication with the surrounding atmosphere, and a casting, H, surmounting the casting G, and provided with an opening, mi, a smoke-flue, I, extending through the openings m, on', and mi, and car, and a hot-air flue, K, extending from the casting H around the smoke-flue and opening into the interior of the car, substantially as described.

LYMAN I. CONVERSE.

In presence of J. W. DYRENFORTH, CHAs. E. GAYLORD. 

